[Straight back as a cause of systolic heart murmur].

@article{Hartel1962StraightBA,
  title={[Straight back as a cause of systolic heart murmur].},
  author={G Hartel and Juhani Heikkila and L LUOMANMAKI},
  journal={Duodecim; laaketieteellinen aikakauskirja},
  year={1962},
  volume={78},
  pages={646-53}
}